Tuesday morning update
Here is our storm snowfall forecast for Atlantic Canada that I just drew up. The snow will likely come in two waves, one later Tuesday night and a second later Wednesday morning and into the afternoon before tapering off from southwest to northeast Wednesday evening.
I still think the heaviest snow will fall just north and west of Halifax and up into PEI with this storm. Some sleet and freezing rain will cut down on the accumulations over eastern Nova Scotia.
Travel will be very difficult across this region Wednesday afternoon and evening as the wind picks up and we start seeing blizzard conditions with blowing and drifting.
Expect some mixed precipitation Wednesday morning over the Avalon Peninsula in Newfoundland before a quick change to rain early in the afternoon as the heavier snow heads up into western Newfoundland.
I just got back earlier Monday evening from a nice weekend of skiing at Mount St. Louis Moonstone. The drive home was a little dicey south of Buffalo with snow covered roads and lower visibility in snow and thus the trip took about seven hours.
Anyway, I have been looking over the charts over the past hour, and there is going to be a snowstorm for southern New Brunswick, PEI and Nova Scotia later Tuesday night into Wednesday then into the western two-thirds of Newfoundland Wednesday and Wednesday night.
The storm will track from just south of Nova Scotia to central Newfoundland. Blizzard conditions are possible for a time Wednesday afternoon and evening from PEI to central Nova Scotia.
Along the southern and eastern coastal areas of Nova Scotia, the snow may mix with or change to sleet or freezing rain for a times as just enough mild air works in just above the surface.
It appears that the worst of the storm in terms of snow will affect locations such as Saint John and Moncton, NB; Digby, Kentville, Truro, Amherst and New Glasgow, NS; and Charlottetown, PEI. In these cities, there is the potential for 20-30 cm of snow with up to 40 cm possible from PEI to north-central Nova Scotia.
I will have more details on this along with a map later Tuesday morning after I get back into the office. I will also discuss the next arctic blast.
Latest weekly long-range interpretation indicates a possible pattern change for the Pacific Northwest and southern BC in February as a wetter pattern may return.
Oho will likely bring hurricane-force wind gusts and heavy rainfall to parts of coastal BC Thursday night into Friday.
Weather pattern clues through the end of October.
Major rainfall event for the Maritimes late tonight, Wednesday and Wednesday night. Heaviest rain headed for central New Brunswick.
Flood potential for portions of the Maritimes midweek.
My latest interpretation of the weekly long range forecast output.
Weekly weather pattern clues into mid-October.